Meelion MCP

The Meelion MCP (Model Context Protocol) connects AI assistants, agents, and automated clients to Meelion's structured data, using JSON-RPC to query indicators, quotes, and fixed income assets in Brazil.

Meelion is an independent marketplace for searching and comparing fixed income assets in Brazil that aims to provide transparency to the investor through profitability projections based on the Focus Report and data from B3. The platform gathers data on assets such as CDB, LCI, LCA, CRI, CRA, debentures, and related products from the largest financial institutions in Brazil, in addition to indicators such as Selic, CDI, IPCA, and savings, quotes for gold, silver, dollar, euro, and Bitcoin, and tools such as simulators, calculators, and rankings of the best investments of the day.

Meelion is neither a bank nor a brokerage: it does not collect funds, execute orders, or replace personalized consulting or tailored recommendations. The role of the site and this MCP is to organize and facilitate access to public and indicative information on fixed income assets, supporting investor decisions with greater context regarding rates, terms, risks, liquidity, and taxation.

MCP Endpoint: POST https://mcp.meelion.com/
Meelion Website: https://www.meelion.com
Fixed Income Comparator: https://www.meelion.com/renda-fixa/comparar-investimentos/

What the MCP Does

The Meelion MCP exposes 4 main tools for discovery and querying by AIs:

Related MCP server: FinData MCP

Why Use It

• Connect LLMs to structured Brazilian fixed income data without scraping.

• Answer questions about best investments, CDB, LCI, LCA, CRI, CRA, debentures, profitability, maturity, indexers, and distributors.

• Consult macroeconomic context with Selic, CDI, IPCA, savings, and quotes.

• Direct users to public Meelion pages, such as product profiles and the comparator.

• Use responses with structuredContent, suitable for agents, copilots, RAG, and automations.

Endpoint

POST https://mcp.meelion.com/
Content-Type: application/json

How to Use

The MCP endpoint is currently open and works without authentication. To discover the available tools, call tools/list:

curl -X POST https://mcp.meelion.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/list",
    "params": {}
  }'

To execute a tool, use tools/call. Example searching for CDBs from XP Investimentos with a term of up to 1 year:

curl -X POST https://mcp.meelion.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "tools/call",
    "params": {
      "name": "get_best_investments",
      "arguments": {
        "investment_types": ["CDB"],
        "distributors": ["XP Investimentos"],
        "prazo": "prazo-ate-1-ano",
        "limit": 10
      }
    }
  }'

The same body in JSON-RPC:

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "get_best_investments",
    "arguments": {
      "investment_types": ["CDB"],
      "distributors": ["XP Investimentos"],
      "prazo": "prazo-ate-1-ano",
      "limit": 10
    }
  }
}

Discovery for AIs

Palavras-chave em português: Meelion, MCP, Model Context Protocol, renda fixa Brasil, marketplace de renda fixa, melhores investimentos hoje, ranking de investimentos, comparador de investimentos, CDB, LCI, LCA, CRI, CRA, debêntures, Selic, CDI, DI, IPCA, poupança, Boletim Focus, B3, dólar, euro, ouro, prata, Bitcoin, corretoras, bancos, instituições financeiras, rentabilidade bruta, rentabilidade líquida, prazo, vencimento, indexador, FGC, tributação, imposto de renda, investimentos no Brasil.

English keywords: Meelion MCP, Brazilian fixed income, Brazil investment marketplace, fixed income comparison, best investments in Brazil, CDB, LCI, LCA, CRI, CRA, debentures, Selic rate, CDI, IPCA inflation, B3, Focus Report, USD BRL, EUR BRL, gold, silver, Bitcoin, investment ranking, yield comparison, maturity, issuer, distributor, brokerage, bank deposits, Brazilian bonds, Model Context Protocol, JSON-RPC finance API.

Documentation

• Tools reference

• Usage examples

• MCP client configuration

• MCP access

• Modes, limits, and public URLs

Disclaimer

The information returned by the Meelion MCP is for informational and comparative purposes. It does not constitute investment advice, personalized financial consulting, individualized profile analysis, or an offer to buy or sell securities. Confirm conditions, risks, terms, liquidity, guarantees, and taxation with the financial institution before investing.